<template>
  <div id="bg-particles" class="bg-particles"></div>
</template>
<script>
import 'particles.js';
export default {
  data() {
    return {};
  },
  mounted() {
    this.init();
  },
  destroyed() {
    this.instance && this.instance.destroy();
  },
  methods: {
    init() {
      const defaultOpt = {
        particles: {
          number: {
            value: 140,
            density: {
              enable: true,
              value_area: 1000,
            },
          },
          color: {
            value: ['#aa73ff', '#f8c210', '#83d238', '#33b1f8'],
          },
          shape: {
            type: 'circle',
            stroke: {
              width: 0,
              color: '#000000',
            },
            polygon: {
              nb_sides: 5,
            },
            image: {
              src: 'img/github.svg',
              width: 100,
              height: 100,
            },
          },
          opacity: {
            value: 0.3,
            random: false,
            anim: {
              enable: false,
              speed: 1,
              opacity_min: 0.1,
              sync: false,
            },
          },
          size: {
            value: 5,
            random: true,
            anim: {
              enable: false,
              speed: 40,
              size_min: 0.1,
              sync: false,
            },
          },
          line_linked: {
            enable: true,
            distance: 150,
            color: '#ffffff',
            opacity: 0.4,
            width: 1,
          },
          move: {
            enable: true,
            speed: 3,
            direction: 'none',
            random: true,
            straight: false,
            out_mode: 'out',
            attract: {
              enable: false,
              rotateX: 600,
              rotateY: 1200,
            },
          },
        },
        interactivity: {
          detect_on: 'canvas',
          events: {
            onhover: {
              enable: false,
              mode: 'bubble',
            },
            onclick: {
              enable: true,
              mode: 'push',
            },
            resize: true,
          },
          modes: {
            grab: {
              distance: 400,
              line_linked: {
                opacity: 1,
              },
            },
            bubble: {
              distance: 400,
              size: 40,
              duration: 2,
              opacity: 8,
              speed: 3,
            },
            repulse: {
              distance: 200,
            },
            push: {
              particles_nb: 4,
            },
            remove: {
              particles_nb: 2,
            },
          },
        },
        retina_detect: true,
        config_demo: {
          hide_card: false,
          background_color: '#b61924',
          background_image: '',
          background_position: '50% 50%',
          background_repeat: 'no-repeat',
          background_size: 'cover',
        },
      };
      if (window.particlesJS) {
        this.instance = window.particlesJS('bg-particles', { ...defaultOpt });
      }
    },
  },
};
</script>
<style lang="less">
.bg-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
</style>
